ticket:10098: Fixed a bug introduced by the previous commit.

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk/source@33587 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10081: stable sort via insertion sort with binary search; test it well

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk/source@33588 251d0590-4201-4cf1-90de-194747b24ca1